diff --git a/django/template/defaultfilters.py b/django/template/defaultfilters.py
index c75f371ec8..a2e9d2f405 100644
--- a/django/template/defaultfilters.py
+++ b/django/template/defaultfilters.py
@@ -339,7 +339,7 @@ def date(value, arg=None):
 def time(value, arg=None):
     "Formats a time according to the given format"
     from django.utils.dateformat import time_format
-    if not value:
+    if value in (None, ''):
         return ''
     if arg is None:
         arg = settings.TIME_FORMAT
@@ -437,7 +437,7 @@ def pluralize(value, arg='s'):
     is used instead. If the provided argument contains a comma, the text before
     the comma is used for the singular case.
     """
-    if not ',' in arg: 
+    if not ',' in arg:
         arg = ',' + arg
     bits = arg.split(',')
     if len(bits) > 2:
diff --git a/tests/othertests/defaultfilters.py b/tests/othertests/defaultfilters.py
index 1636b948d0..9b1cfda833 100644
--- a/tests/othertests/defaultfilters.py
+++ b/tests/othertests/defaultfilters.py
@@ -231,6 +231,9 @@ False
 >>> time(datetime.time(13), "h")
 '01'
 
+>>> time(datetime.time(0), "h")
+'12'
+
 # real testing is done in timesince.py, where we can provide our own 'now'
 >>> timesince(datetime.datetime.now() - datetime.timedelta(1))
 '1 day'